I have an 02 STi with Ninja Back Box and Afterburner centre pipe. According to the diagrams on the Scoobyworld website, there is a cat after the downpipe (also with a cat in). If I replace the cat pipe will the car be fine or will there be boost issues ?

Cheers

Neil

 

Surely someone must know the answer to my question. Maybethe title will attract a little more attention !!!!!!!!!!!

 

replacing the second cat is a popular mod and does not cause any boost problems. go for it
ken

 

Was kinda hoping someone would say that !!!!

Cheers